151144221 has 16 divisors (see below), whose sum is σ = 213258240. Its totient is φ = 94952880.

The previous prime is 151144211. The next prime is 151144243. The reversal of 151144221 is 122441151.

It is not a de Polignac number, because 151144221 - 2⁹ = 151143709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151144211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3946 + ... + 17828.

It is an arithmetic number, because the mean of its divisors is an integer number (13328640).

Almost surely, 2^151144221 is an apocalyptic number.

It is an amenable number.

151144221 is a deficient number, since it is larger than the sum of its proper divisors (62114019).

151144221 is a wasteful number, since it uses less digits than its factorization.

151144221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14096.

The product of its digits is 320, while the sum is 21.

The square root of 151144221 is about 12294.0725961741. The cubic root of 151144221 is about 532.6768818805.

Adding to 151144221 its reverse (122441151), we get a palindrome (273585372).

The spelling of 151144221 in words is "one hundred fifty-one million, one hundred forty-four thousand, two hundred twenty-one".